Lesson#8 Question No.7 Q.7. The points A(-1,2), B(3,-1) and C(6,3) are consecutive vertices of a rhombus. Find the fourth vertex and show that the diagonals of the rhombus are perpendicular to each other. Question No.6 Q.6. The three points A(7,-1), B(-2,2) and C(1,4) are consecutive vertices of a parallelogram. Find the fourth vertex. Introduction to Analytical Geometry Chapter No 4 Exercise No 4.3 Mathematics part 2